<template>
  <!-- 主体部分 -->
  <section class="main">
    <input
      id="toggle-all"
      class="toggle-all"
      type="checkbox"
     v-model="checkAll"
    />
    <label for="toggle-all">Mark all as complete</label>
    <ul class="todo-list">
      <!-- 当任务已完成，可以给 li 加上 completed 类，会让元素加上删除线 -->
      <li v-for="item in list" :key="item.id" :class="{ completed: item.isDone }">
        <div class="view">
          <input
            class="toggle"
            type="checkbox"
            @click="changeItem(item)"
            :checked="item.isDone"
          />
          <label>{{ item.title }}</label>
          <button class="destroy" @click="delItem(item.id)"></button>
        </div>
        <!-- <input class="edit" value="Create a TodoMVC template" /> -->
      </li>
    </ul>
  </section>
</template>
<script>

import { mapState } from 'vuex'

export default {
  data () {
    return {

    }
  },
  methods: {
    // ...mapMutations('todo', ['checkItem']),
    delItem (id) {
      this.$store.dispatch('todo/delItem', id)
    },
    changeItem (obj) {
      this.$store.dispatch('todo/changeItem', obj)
    }
  },
  computed: {
    ...mapState('todo', ['list']),
    checkAll: {
      get () {
        return this.list.every(item => item.isDone === true)
        // return this.checkItem()
      },
      set (val) {
        this.$store.dispatch('todo/changeAll', val)
      }
    }
  }
}
</script>
